From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Subject: Re: Regression in i915 driver in 3.16-rc2 Date: Wed, 25 Jun 2014 21:26:09 +0300 Message-ID: <20140625182609.GY27580@intel.com> References: <20140108161713.GT4770@phenom.ffwll.local> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTP id F1E77897D7 for ; Wed, 25 Jun 2014 11:26:14 -0700 (PDT) Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Alan Stern Cc: intel-gfx , Kernel development list List-Id: intel-gfx@lists.freedesktop.org On Wed, Jun 25, 2014 at 02:06:55PM -0400, Alan Stern wrote: > Daniel: > = > I encountered a new problem in the i915 driver the first time I booted = > a 3.16-rc kernel on this computer. When it switched over to the frame = > buffer driver, the screen went blank and stayed that way. > = > 3.15 works okay. > = > Attached are log extracts from 3.15 and 3.16 (both with drm.debug=3D0xe > in the boot command line). The timestamps have been stripped out for > easy diff comparison. These are the result of > = > dmesg | egrep 'drm|i915|frame' > = > with a couple of irrelevant lines removed. I can send the complete = > logs if you need them. > = > Alan Stern > Kernel command line: BOOT_IMAGE=3D/boot/test-3.x root=3D/dev/hda8 ro cons= ole=3DttyS0,115200 console=3Dtty0 earlyprintk=3Dserial,ttyS0,115200 no_cons= ole_suspend drm.debug=3D0xe vconsole.keymap=3Dus vconsole.font=3Dlatarcyrhe= b-sun16 LANG=3Den_US.UTF-8 usbcore.dyndbg=3D+p ehci_hcd.dyndbg=3D+p > [drm] Initialized drm 1.1.0 20060810 > [drm:i915_dump_device_info] i915 device info: gen=3D2, pciid=3D0x2572 fla= gs=3Dhas_overlay,overlay_needs_physical, > [drm:intel_detect_pch] No PCH found. > [drm] Memory usable by graphics device =3D 128M > [drm:i915_gem_gtt_init] GMADR size =3D 128M > [drm:i915_gem_gtt_init] GTT stolen size =3D 8M > [drm:i915_gem_gtt_init] ppgtt mode: 0 > [drm:intel_opregion_setup] graphic opregion physical addr: 0x0 > [drm:intel_opregion_setup] ACPI OpRegion not supported! > [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). > [drm] Driver supports precise vblank timestamp query. > [drm:init_vbt_defaults] Set default to SSC at 66667 kHz > [drm:parse_general_features] BDB_GENERAL_FEATURES int_tv_support 1 int_cr= t_support 0 lvds_use_ssc 0 lvds_ssc_freq 48000 display_clock_mode 0 fdi_rx_= polarity_inverted 0 ^^^^^^= ^^^^^^^^^^^ This should get your display back: http://patchwork.freedesktop.org/patch/28508/ -- = Ville Syrj=E4l=E4 Intel OTC